Predefined reflective appearance eyewear lens with neutral balance visual perception

ABSTRACT

Provided is an eyewear lens, including a lens substrate and an optical interference coating. The lens substrate is comprised of an optical material, and the optical interference coating is combined with the lens substrate and is stacked by the composition of high and low reflectivity materials. A predefined reflective appearance color will be formed by light getting through the optical interference coating. The lens substrate contains another filter on one side surface or both side surfaces or inside the lens substrate which is complementary to the light after penetrating the optical interference coating such that the overall transmittance light color remains neutral balance. Moreover, the overall transmittance spectrum of a lens uniformly filters the reflected visible light of objects. As such, a stylish reflective appearance color lens having neutral balance perspective visual tone and most colorful rendering effect of watching the scenery is achieved.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims the priority of Taiwanese patent application No.106115163, filed on May 8, 2017, which is incorporated herewith byreference.

BACKGROUND OF THE INVENTION 1. Field of the Invention

The present disclosure relates to a spectacle lens, and morespecifically to a visual tone neutral balance spectacle lens havingpredefined different reflective appearance colors.

2. Description of Related Art

The main functions of sunglasses used in outdoor activities or drivingare to adjust the intensity of sunlight and to prevent UV damage fromthe eyes. At the same time, a sunglass is also an important accessory topeople in the overall clothing. Consumers will be attracted to the frameshape and exterior color, will consider whether the glasses and theoverall fashion modeling are matched, and then try to have visualperception by seeing through the lenses.

Generally, the color of the untreated glass or resin lenses is atransparent primary color. Moreover, since the intensity of sunlight isrequired to be adjusted, colored dye materials are added in sunglasseslenses and/or uniform or gradient color of dye is added on the surfaceof sunglasses lenses. In another method, a light reflective andabsorptive metal (such as: chromium) is coated on the surface of a lensso as to produce a metallic flash appearance. In addition, the mostpopular method is to coat high-reflective optical interference layerspredefining their hues, and thus producing different colors like asimilar butterfly wings and a metallic luster reflective appearance.

When the color dye is used to absorb transmitted light and to adjust thehue of the lens, the colors on both sides of the lens will be fixed andwill be the same; that is, when a consumer selects a color of aspectacle lens, the visual sensation colors will be the same. Likewise,if the consumer chooses a metallic luster color-coated eyewear lens,such as a blue appearance, the internal visual sensation color of thelens will turn into yellow. As the result, those prior arts will causeconsumers in the purchase of sunglasses; the stylish lens appearance andcomfortable visual perception cannot be obtained simultaneously.

SUMMARY OF THE INVENTION

In light of the foregoing problems, an objective of the presentdisclosure is to provide a predefined reflective appearance eyewear lenswith neutral balance visual perception such that consumers can choose apreferred lens appearance with a neutral balance and the richest colorcan be shown.

In order to achieve the above objective, the present disclosure providesa predefined reflective appearance eyewear lens with neutral balancevisual perception, including a lens substrate and an opticalinterference coating, wherein the lens substrate is comprised of anoptical material, the optical interference coating is bonded to the lenssubstrate and is stacked by means of high and low reflective indexmaterials, light passes through the optical interference coating toproduce a reflective appearance color predefined, wherein at least oneside surface of the lens substrate, both side surfaces of the lenssubstrate or inside of the lens substrate comprises at least anotherfilter layer and its filtered light is complementary to the light afterpassing through the optical interference coating to maintain the overalltransmittance light color neutral balance of the lens. Further, when theoverall transmittance spectrum is within a defined visible lightwavelength range, the overall transmittance spectrum of the lens isuniformly filtered to achieve the most colorful color rendering effect,wherein the reflected light spectrum chromaticity coordinates (Rx, Ry)of the reflective appearance color located within the outside of aneutral balance elliptical parameter equation in the CIE 1931 XY colorspace chromaticity coordinates, and the overall transmittance spectrumchromaticity coordinates (Tx, Ty) of the lens located within the insideof the neutral balance elliptical parameter equation in the CIE 1931 XYcolor space chromaticity, where the elliptical parameter equation isexpressed as follows:

$\begin{Bmatrix}{x = {{a\; {\cos (t)}\mspace{14mu} {\cos (\theta)}} - {b\; {\sin (t)}\mspace{14mu} {\sin (\theta)}} + h}} \\{y = {{a\; {\cos (t)}\mspace{14mu} {\sin (\theta)}} + {b\; {\sin (t)}\mspace{14mu} {\cos (\theta)}} + k}}\end{Bmatrix}\quad$

where: t is the radian parameter between 0-2π;

θ is the elliptical rotating radian (0.66);

a, b are two radii of an ellipse (a is 0.07, b is 0.04);

h and k are the elliptical center coordinates, that is, (h, k)=(0.34,0.32).

In a preferred embodiment of the present disclosure, when the overalltransmittance spectrum of the lens is between 420 nm and 700 nm, thespectrum intensity of respective wavelengths is between −12% and 12% ofthe overall average transmittance intensity of the lens.

In a preferred embodiment of the present disclosure, when the overalltransmittance spectrum of the lens is between 420 nm and 700 nm, thespectrum intensity of respective wavelengths is between −8% and 8% ofthe overall average transmittance intensity of the lens.

In a preferred embodiment of the present disclosure, when the overalltransmittance spectrum of the lens is between 420 nm and 700 nm, thespectrum intensity of respective wavelengths is between −5% and 5% ofthe overall average transmittance intensity of the lens.

In a preferred embodiment of the present disclosure, when the overalltransmittance spectrum of the lens is between 400 nm and 780 nm, thespectrum intensity of respective wavelengths is between −12% and 12% ofthe overall average transmittance intensity of the lens.

In a preferred embodiment of the present disclosure, when the overalltransmittance spectrum of the lens is between 400 nm and 780 nm, thespectrum intensity of respective wavelengths is between −8% and 8% ofthe overall average transmittance intensity of the lens.

In a preferred embodiment of the present disclosure, when the overalltransmittance spectrum of the lens is between 400 nm and 780 nm, thespectrum intensity of respective wavelengths is between −5% and 5% ofthe overall average transmittance intensity of the lens.

Preferably, the reflective appearance color of the lens is produced bythe optical interference coating and another filter layer contained inthe lens substrate is comprised of at least one dye.

Preferably, the dye is combined with the lens substrate by mean ofdipping, painting or pre-mixing.

Preferably, the dye may have a polarizing effect.

Preferably, the dye may also have a photochromic effect.

Preferably, the reflective appearance color of the lens is produced bythe optical interference coating and another filter layer contained inthe lens substrate is comprised of at least one color filter sheet.

Preferably, the color filter sheet is combined with the lens substrateby in-mold casting, in-mold injection or laminating adhesive.

Preferably, the color filter sheet may have a polarizing effect.

Preferably, the color filter sheet may also have a photochromic effect.

Preferably, the reflective appearance color of the lens is produced bythe optical interference coating and another filter layer contained inthe lens substrate is comprised of another optical interference coating.

Preferably, the optical interference coating is combined with the lenssubstrate by vacuum vapor deposition or spinning coating.

Preferably, the material of the lens substrate may be a polymeric resinor a glass.

Preferably, the lens substrate may be formed by casting molding,injection molding or cutting and polishing.

Preferably, the lens substrate may be a plano lens, a semi finished lensor a prescription lens.

Preferably, the lens is suitable for use in sunglasses, sport eyewear,safety goggles, swimming goggles or skiing goggles.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows a CIE 1931 XY chromaticity diagram of the human eye atdifferent brightness values perceived to the maximum color gamut range;

FIG. 2 shows a schematic diagram of a lens with blue reflectiveappearance and neutral balance visual perception light.

FIG. 3 shows a schematic diagram of a lens with predefined bluereflective appearance and yellow visual perception light.

FIG. 4 shows a spectrum diagram of a prior art lens having bluereflective appearance and yellow visual perception therein.

FIG. 5 shows a CIE 1931 XY chromaticity diagram of a prior art lenshaving blue reflective appearance coating and yellow visual perception.

FIG. 6 shows a CIE 1931 XY chromaticity diagram of MacAdam ellipticalexperimental results.

FIG. 7 shows a CIE 1931 XY chromaticity diagram of the ICI color system.

FIG. 8 shows a spectrum diagram of the relative response values of humaneye cone cells at each wavelength.

FIG. 9 shows a CIE 1931 XY chromaticity diagram of a prior art lens thatthe blue reflective appearance color coordinates and the yellow visualperception color coordinates are located outside the neutral balanceellipse.

FIG. 10 shows a spectrum of different specification of neutral density(ND) filters used in the commercially available cameras.

FIG. 11 shows a spectrum of the lenses having a blue reflectiveappearance and the overall transmittance light intensity according to anembodiment of the present disclosure.

FIG. 12 shows the categories (Cat.) of sunglasses standard, the averagetransmittance light specification for each category, and the overalltransmittance light filtering intensity range for respective wavelengthsof each category.

FIG. 13 shows spectrums of some popular appearance color sunglasseslenses produced by interference coating.

FIG. 14 shows a CIE 1931 XY chromaticity diagram of all different lenscolor coordinates located outside the neutral balance ellipse.

FIG. 15 shows a cross-sectional view of a lens according to anembodiment of the present disclosure, wherein a lens substrate is formedby a pre-mixed optical material and a dye, and then the opticalinterference coating is bonded to the surface of the lens substrate.

FIG. 16 shows a cross-sectional view of a lens according to anembodiment of the present disclosure, wherein the dye is bonded to bothsides of the lens substrate by the dipping process or the paintingprocess, and then the optical interference coating is bonded to thesurface of the lens substrate.

FIG. 17 shows a cross-sectional view of a lens according to anembodiment of the present disclosure, wherein the color filter sheet isbonded to the front surface of the lens substrate by in-mold injectionmolding, and then the optical interference coating is bonded to thesurface of the lens substrate.

FIG. 18 shows a cross-sectional view of a lens according to anembodiment of the present disclosure, wherein the reflectiveinterference coating is bonded to the front surface of the lenssubstrate and the complementary interference coating is bonded to rearsurface thereof.

FIG. 19 shows a cross-sectional view of a lens according to anembodiment of the present disclosure, wherein a lens substrate having anreflective interference coating is bonded to another lens substratehaving a complementary optical interference coating.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

In the following detailed description, for purpose of explanation,numerous specific details are set forth in order to provide a thoroughunderstanding of the disclosed embodiments. It will be apparent,however, that one or more embodiments may be practiced without thesespecific details. In other instances, well-known structures and devicesare schematically shown in order to simplify the drawing.

There are many kinds of coordinate systems used in chromatics torepresent color or neutral balance. The present disclosure adoptsindustry-wide standards, that is, in the D65 standard light sourceirradiation, the color characteristics of a lens are described anddefined in the coordinates (x, y) of the CIE 1931 XY color spacechromaticity coordinate system according to the inventive concept andembodiment of the present disclosure. The inventions of the same conceptas the present invention are described by different coordinate systems,and it is easy to determine whether or not to fall within the scopedisclosed by the present disclosure based on simply performing themathematical conversion a color coordinate system.

Light is the primary condition that human eye can see the object.However, even if there are regulatory mechanisms of eyelids, pupils andvisual cell adaption, the range of light changes in a day is oftenbeyond the scope that human eye can adapt. The illumination at sunnynoon will usually reach hundreds of thousands of lumens. Such anenvironment not only makes the eyes feel uncomfortable, and in such ahigh brightness environment, the perceived range of color is alsonarrowed, as shown in FIG. 1. Therefore, Sunglasses or skiing gogglesand other products came into being. In different environments, peoplecan choose the appropriate perspective glasses, the ambient light to thehuman eye can be pre-filtered and can be adjusted to the mostcomfortable range. According, people can see the richest color.

However, the demand for glasses is not limited to its function, theappearance and color of the glasses and the wearing visual experienceare also important factors when consumers choose a pair of glasses. FIG.2 shows a schematic diagram of a lens with blue reflective appearance 1and neutral balance 2 visual perception light. Moreover, FIG. 3 shows aschematic diagram of a lens with predefined blue reflective appearance 1and yellow 3 visual perception light.

When the color dye is used to absorb transmitted light and to adjust thehue of the lens, the colors on both surfaces of the lens will be fixedand will be the same; that is, when a consumer selects a color of aspectacle lens, the visual sensation colors will be the same. Likewise,if the consumer chooses a metallic luster color-coated eyewear lens,such as a blue appearance, the internal visual sensation color of thelens will turn into yellow, as shown in FIG. 3. By measuring the lens ina laboratory using a spectrophotometer, a spectrum of blue reflectionappearance and a yellow overall transmittance spectrum of visualperception can be obtained, as shown in FIG. 4.

At the same time, the spectrophotometer is able to convert thereflection and transmittance colors of the lens into the CIE 1931 XYcolor space chromaticity diagram in the D65 standard light source.Taking the above prior art as examples, the chromaticity coordinates ofblue appearance reflected spectrum is: (x, y)=(0.18, 0.26); and thechromaticity coordinates of yellow perception transmittance spectrum is:(x, y)=(0.42, 0.35), which is plotted on the CIE 1931 XY color spacechromaticity diagram, as shown in FIG. 5.

How to distinguish between different colors or neutral white has becomean interesting issue. David L. MacAdam published a paper in the 1942,indicating that the human eye can distinguish between the same color orwhite range. Different sizes of ellipses can be defined in the CIE 1931XY color space chromaticity coordinates, as shown in FIG. 6.

In addition, according to FIG. 2 in U.S. Pat. No. 4,176,299 published in1978, a ICI color system diagram is defined in the CIE1931 XY colorchromaticity coordinates, and the light source within the range definedby the dashed line will be viewed by the human eye as close to the whitelight. The results are cited in FIG. 7.

Therefore, referring to the literature of colorology and comparing thelens product color coordinates (x, y) with the human eye test results,the present disclosure can be concluded that the perceived tone neutralbalance color coordinate range can be defined in the inside of theelliptical parametric equation in the CIE 1931 XY color spacechromaticity coordinate system; In contrast, the color coordinateslocated outside of this elliptical parametric equation can be defined asa lens with colored appearance or with colored visual perception. Assuch the elliptical parameter equation (1) is expressed as follows:

$\begin{matrix}\begin{Bmatrix}{x = {{a\; {\cos (t)}\mspace{14mu} {\cos (\theta)}} - {b\; {\sin (t)}\mspace{14mu} {\sin (\theta)}} + h}} \\{y = {{a\; {\cos (t)}\mspace{14mu} {\sin (\theta)}} + {b\; {\sin (t)}\mspace{14mu} {\cos (\theta)}} + k}}\end{Bmatrix} & (1)\end{matrix}$

where: t is the radian parameter is between 0-2π;

θ is the elliptical rotating radian (0.66);

a, b are two radii of an ellipse (a is 0.07, b is 0.04);

h and k are the elliptical center coordinates, that is, (h, k)=(0.34,0.32).

It is worth noting that the best neutral balance ellipse radius a, b isderived from the literature and the measured data regression of lensproducts; the rotating radians θ is roughly parallel to the black bodyradiation line; and the equivalent energy point (x, y)=(0.33, 0.33).However, since the human eye cone cells are more sensitive to the greenlight, and are less sensitive to blue light having a wavelength that issmall than 420 nm and red light having a wavelength that is big than 700nm (please refer to FIG. 8), and with the results of the human eye getused to the color temperature, the elliptical center coordinates h, kare slightly offset, such as (0.34, 0.32).

Hereinafter are the detailed descriptions of the embodiments 1, 2 and 3of the present disclosure.

Embodiment 1 A Blue Reflective Appearance Polycarbonate Plano Lens withNeutral Balance Perception

First of all, different color dye powders (Bayer Chemical MARCOLEXSeries) in an appropriate proportion of blending are used to bluish(complementary to yellow) dyeing powder formula, and are coupled withcarbon black (J&JH Company) to adjust the gray scale, thereby pre-mixingtogether with polycarbonate(PC) optical resin (Tei Jin Chemical LTD.Panlite Series) to pumping granulation. The dyeing PC granulation isused as a raw material, and injection molding is used to make planosemi-finish lenses. A surface hardening procedure is adopted to increasethe wear resistance of PC lenses. In a vacuum vapor deposition machine,by using two kinds of stacked materials Ti3O5 and SiO2, several opticalinterference layers are constituted to form a blue reflective appearancecoating on the convex surface of lenses. Please refer to FIG. 15,preferably, the anti-reflective coating may be applied to the concavesurface of the lenses with the same machine and materials. Finally, theoverall transmittance of the lens is measured by a spectrophotometer toconfirm that the chromaticity coordinates (x, y)=(0.32, 0.34) in theCIE1931 chromaticity diagram are within the neutral balance ellipse inthe D65 standard light source.

Referring to FIG. 9, the blue reflective appearance color coordinatesand the yellow visual perception color coordinates are located outsidethe neutral balance ellipse in the CIE 1931 XY chromaticity diagram.However, according to one embodiment of the disclosed lens, the overallvisual color coordinates are located within the neutral balance ellipsein the CIE 1931 XY chromaticity diagram. Consumers are able to wearsunglasses with a stylish metallic luster of the blue reflectiveappearance and have the visual experience of the neutral tones.

Furthermore, humans can survive in the natural environment so far, sothat the visual system is evolved into the most suitable natural solarradiation. In the outdoors, the object can reflect the continuousspectrum, so as to show the richest colors, thereby not only helpingpeople to easily identify objects, but also making people feel happy andsleep well. Therefore, the CIE International Commission on Illuminationdefines the color rendering index (CRI), that is, whether the lightsource can faithfully show the amount of object color ability can bedescribed. The higher the CRI value is, the closer the color performanceto the ideal light source or the natural light source is.

In practice, the D65 light source is used as a standard light source forsimulating sunlight. However, after filtering the sunlight through theyellow lens of the prior art, the composition ratio of the differentcolor bands has already been different from that of the naturalsunlight; that is, the color rendering index (CRI) of the light passingthrough the lens is decreased.

The relatively ideal filters in the field of camera lenses alreadyexist; that is, the Neutral Density Filter, as shown in FIG. 10. Takingthe ND 50 filter as an example, 50% of the light passes through thefilter evenly within the range of the visible spectrum. Therefore, indifferent shooting modes, the film or the photosensitive device may getbetter exposure contrast or may achieve the special shooting effect.

The sunglasses standard defines the average transmitted lightspecification for each category. In Embodiment 1 of the presentdisclosure, by using appropriate dyes and carbon black formulations, thelens with different categories (Cat.) for sunglasses standard can beobtained. A lens with blue reflective appearance allows average 30%light to pass through evenly (Cat. 2) and its chromaticity coordinatesis (0.32, 0.34); Another lens with blue reflective appearance allowsaverage 15% light to pass through evenly (Cat. 3) and its chromaticitycoordinates is (0.32, 0.34), as shown in FIG. 11.

In order to comply with the regulatory requirements, most of the lensmaterials are added to the UV absorber, so that the wavelength of 400 nmbelow the transmittance is equal to 0, some of the lens transmittancefrom 420 nm wavelength began to significantly decline. Moreover, becausethe relative response of human cone cells is weaker, the wavelength isless than 420 nm and greater than 700 nm (please refer to FIG. 8).Therefore, when the fluctuation ratio of transmittance betweenwavelengths of 420 nm to 700 nm is controlled, high color rendering,operational flexibility and cost advantages can be maintained at thesame time while preparing dye formulations and optical coatings (asshown in FIG. 12).

For the focus on the overall stylish modeling, the need for outdooractivities and the requirement of visual perception of high colorrendering, (such as architects, landscape designers, costume stylists,photographers, directors or painters . . . etc.), the disclosuresunglasses products are good choices.

Embodiment 2 A Blue Reflective Appearance Polarizing PrescriptionSunglasses Lens with Neutral Balance Perception

Referring to Embodiment 1 of the present disclosure, the blue(complementary to the optical interference coating) polarizer and thepolycarbonate (PC) resin form a semi-finished lens by an in-moldinjection process. The polarizer is bonded to the convex surface of thelens. According to the custom prescription (cutting and polishing theconcave surface of the lens), by means of the spin coating process, thesurface is hardened, thereby increasing its wear characteristics. Thelens is placed in a vacuum deposition machine to form a blue reflectiveappearance coating on the convex surface of the lens. Please refer toFIG. 17, preferably, the anti-reflective coating may be applied to theconcave surface of the lenses with the same machine and materials.Finally, the overall transmittance of the lens is measured by aspectrophotometer to confirm that the chromaticity coordinates in theCIE1931 chromaticity diagram are within the neutral balance ellipse inthe D65 standard light source.

Embodiment 3 A Blue Reflective Appearance Photochromatic PrescriptionSunglasses Lens with Neutral Balance Perception

Based on a photochromatic semi-finished lens (PPG Chemical CompanyTrivex Series) and according to the custom prescription (cutting andpolishing the concave surface of the lens), by means of the spin coatingprocess, the surface is hardened, thereby increasing its wearcharacteristics. The lens is placed in a vacuum deposition machine toform a blue reflective appearance coating on the convex surface of thelens and to form another interference coating (complementary to thetotal transmitted light of the first convex coating and the lenssubstrate) on the concave surface of the lens. Please refer to FIG. 18,finally, the overall transmittance of the lens is measured by aspectrophotometer under exposure to UV light to confirm that thechromaticity coordinates in the CIE1931 chromaticity diagram are withinthe neutral balance ellipse in the D65 standard light source.

Although an optical interference coating with a blue reflectiveappearance is used in all the embodiments of the present disclosure,some other popular appearance colors will be coated on the sunglasses.Their reflection spectra are shown in FIG. 13. Their chromaticitycoordinates are located outside the neutral balance ellipse in the CIE1931 XY chromaticity diagram, as shown in FIG. 14. According to theappropriate complementary dye formulation, the color filter andinterference coating and the processes described above, the chromaticitycoordinates of the overall transmitted light of the lenses will fallwithin the neutral balance ellipse in the CIE 1931 XY chromaticitydiagram.

FIG. 15 shows a cross-sectional view of a lens according to anembodiment of the present disclosure, wherein a lens substrate 4 isformed by a pre-mixed optical material and a dye 6, and then the opticalinterference coating 5 is bonded to the surface of the lens substrate 4.FIG. 16 shows a cross-sectional view of a lens, wherein the dye 6 isbonded to both sides of the lens substrate by the dipping process or thepainting process, and then the optical interference coating 5 is bondedto the convex surface of the lens 4.

In addition, FIG. 17 shows a cross-sectional view of a lens. The colorfilter sheet 6 a is bonded to the front surface of the lens substrate 4by in-mold injection molding, and then the optical interference coating5 is bonded to the surface of the lens 4. FIG. 18 shows across-sectional view of a lens. The reflective interference coating 5 isbonded to the convex surface of the lens substrate 4 and thecomplementary interference coating 6 b is bonded to rear surfacethereof. FIG. 19 shows a cross-section view of a lens. A lens substrate4 having a reflective interference coating 5 is bonding to another lenssubstrate 4 having a complementary interference coating 6 b.

Although the present disclosure has been described with reference to thepreferred exemplary embodiments thereof, it is apparent to those skilledin the art that a variety of modifications and changes may be madewithout departing from the scope of the present disclosure which isintended to be defined by the appended claims.

What is claimed is:
 1. A predefined reflective appearance eyewear lenswith neutral balance visual perception, comprising: a lens substrate andan optical interference coating, wherein the lens substrate is comprisedof an optical material, the optical interference coating is bonded tothe lens substrate and is stacked by means of high and low reflectiveindex materials, light passes through the optical interference coatingto produce a reflective appearance color predefined, wherein at leastone side surface of the lens substrate, both side surfaces of the lenssubstrate or inside of the lens substrate comprises at least anotherfilter and its filtered light is complementary to the light afterpassing through the optical interference coating to maintain the overalltransmittance light color neutral balance of the lens wherein thereflected light spectrum chromaticity coordinates (Rx, Ry) of thereflective appearance color located within the outside of a neutralbalance elliptical parameter equation in the CIE 1931 XY color spacechromaticity coordinates, and the overall transmittance spectrumchromaticity coordinates (Tx, Ty) of a lens located within the inside ofthe neutral balance elliptical parameter equation in the CIE 1931 XYcolor space chromaticity coordinates, wherein the elliptical parameterequation is expressed as follows: $\begin{Bmatrix}{x = {{a\; {\cos (t)}\mspace{14mu} {\cos (\theta)}} - {b\; {\sin (t)}\mspace{14mu} {\sin (\theta)}} + h}} \\{y = {{a\; {\cos (t)}\mspace{14mu} {\sin (\theta)}} + {b\; {\sin (t)}\mspace{14mu} {\cos (\theta)}} + k}}\end{Bmatrix}\quad$ where: t is the radian parameter between 0-2π; θ isthe elliptical rotating radian (0.66); a, b are two radii of an ellipse(a is 0.07, b is 0.04); h and k are the elliptical center coordinates,that is, (h, k)=(0.34, 0.32).
 2. The lens of claim 1, wherein when theoverall transmittance spectrum of the lens is between 420 nm and 700 nm,the spectrum intensity of respective wavelengths is between −12% and 12%of the overall average transmittance intensity of the lens.
 3. The lensof claim 1, wherein when the overall transmittance spectrum of the lensis between 420 nm to 700 nm, the spectrum intensity of respectivewavelengths is between −8% and 8% of the overall average transmittanceintensity of the lens.
 4. The lens of claim 1, wherein when the overalltransmittance spectrum of the lens is between 420 nm to 700 nm, thespectrum intensity of respective wavelengths is between −5% and 5% ofthe overall average transmittance intensity of the lens.
 5. The lens ofclaim 1, wherein when the overall transmittance spectrum of the lens isbetween 400 nm and 780 nm, the spectrum intensity of respectivewavelengths is between −12% and 12% of the overall average transmittanceintensity of the lens.
 6. The lens of claim 1, wherein when the overalltransmittance spectrum of the lens is between 400 nm and 780 nm, thespectrum intensity of respective wavelengths is between −8% and 8% ofthe overall average transmittance intensity of the lens.
 7. The lens ofclaim 1, wherein when the overall transmittance spectrum of the lens isbetween 400 nm and 780 nm, the spectrum intensity of respectivewavelengths is between −5% and 5% of the overall average transmittanceintensity of the lens.
 8. The lens of claim 1, wherein the reflectiveappearance color of the lens is produced by the optical interferencecoating and another filter layer contained in the lens substrate iscomprised of at least one dye.
 9. The lens of claim 8, wherein the dyeis combined with the lens substrate by mean of dipping, painting orpre-mixing.
 10. The lens of claim 8, wherein the dye has a polarizingeffect.
 11. The lens of claim 8, wherein the dye has a photochromiceffect.
 12. The lens of claim 1, wherein the reflective appearance colorof the lens is produced by the optical interference coating and anotherfilter layer contained in the lens substrate is comprised of at leastone color filter sheet.
 13. The lens of claim 12, wherein the colorfilter sheet is combined with the lens substrate by in-mold casting,in-mold injection or laminating adhesive.
 14. The lens of claim 12,wherein the color filter sheet has a polarizing effect.
 15. The lens ofclaim 12, wherein the color filter sheet has a photochromic effect. 16.The lens of claim 1, wherein the reflective appearance color of the lensis produced by the optical interference coating and another filter layercontained in the lens substrate is comprised of another opticalinterference coating.
 17. The lens of claim 16, wherein the opticalinterference coating is combined with the lens substrate by vacuum vapordeposition or spinning coating.
 18. The lens of claim 1, wherein thematerial of the lens substrate is a polymeric resin or a glass.
 19. Thelens of claim 1, wherein the lens substrate is formed by castingmolding, injection molding or cutting and polishing.
 20. The lens ofclaim 1, wherein the lens substrate is a plano lens, a semi finishedlens or a prescription lens.
 21. The lens of claim 1, wherein the lensis suitable for use in sunglasses, sport eyewear, safety goggles,swimming goggles or skiing goggles.